Wow, Trump overstates things, that’s a shocker.
As for the analysis, I crack up when people point to GDP numbers from the 1950s. That’s the period when there was no manufacturing capacity in much of the developed world because of that thing called World War II. The percentages are also higher when the period before you is lower, because it’s always measured on a relative basis. So if you start in the shitter, a modest economic performance looks like the roaring 20s.
Still, I don’t disagree with the overall claim. The economy wasn’t materially different in the last three years than it was before, but it was trending in the right direction pre-Covid. I suspect to the degree government had any impact, regulatory reforms were responsible for that as much as the tax cuts, which were overstated (the virtual elimination of the state and local tax deduction resulted in an increase for many). But in large part, particularly in a divided government, not much has happened, so economic performance is mostly attributable to the underlying economy, not either political party. Pretty much like it has been for the last decade when, for the vast majority of time, neither party had the power to advance any significant legislative proposals.